With respect to the challenge of ultra-long-distance formation dynamics and control technology brought by space-borne gravitational wave detection system, this paper investigates and analyzes the research status of dynamics and control technology involved in space-borne gravitational wave detection system, including ultra-long-distance relative dynamics, high stability orbit design, high precision configuration initialization strategy and control method, formation reconfiguration and maintenance, multi degree of freedom coordinated control. Based on the analysis of the research status , the key technologies in dynamics and control of space-borne gravitational wave detection system are proposed, including modeling and analysis of formation divergence mechanism for ultra-long-distance formation, robust optimization design theory and method for high stability configuration, initialization and maintenance technology of high precision configuration with limited orbital maneuverability, formation attitude and orbit maintenance strategy under unscientific and fault mode and multi degree of freedom coordinated control approach.